K2 SummitRun on the historic Western States trail, crossing no-hands bridge twice and tackle one of the toughest climbs in the area, and training grounds for top runners, the dreaded K2 climb. 50k (34 miles) r ...(continued)

50 K35 KHalf Marathon8 Miles

CaliforniaAuburn

K2 Summit Trail Starting at the beautiful American River Canyon Overlook Park, run on the historic Western States trail, crossing no-hands bridge twice and tackle one of the toughest climbs in the area, and training ...(continued)

Katcina Mosa 100K Mountain RunA VERY, VERY challenging, difficult and scenic loop course through the Wasatch Mountains above Provo, Utah. About 42% will be on the same course as the Squaw Peak 50. These sections are Mile 2.1, Pole ...(continued)

100 K

UtahSpringville

Kenai River MarathonThe Kenai River Marathon mission is to raise awareness of outdoor recreational activities and to raise funds to further improve the parks of the City of Kenai.

MarathonHalf Marathon

AlaskaKenai

Kentucky Derby Festival MarathonCertified. Includes two city parks designed by Frederick Law Olmsted, Churchill Downs, the newly developed waterfront, and several eclectic neighborhoods.

Marathon

KentuckyLouisville

Kentucky Derby Festival Marathon/miniMarathon & RelaysThe scenic route will include sections of two scenic city parks designed by the esteemed Frederick Law Olmsted, historic Churchill Downs, Louisville's newly developed waterfront, a skate park and several eclectic neighborhoods.

MarathonHalf Marathon

KentuckyLouisville

Kentucky Ultra Trail Sojourn There will be about one mile of paved roads, 6 miles of gravel roads (50 mi only), and the rest will be dirt trails. The first section of the course will include the climb up Tater Knob Fire Tower, HogPen Trail (to add in more mud), and more "fun" hills, since last year's course was too easy!!!

50 Mile50 K

KentuckyMorehead

Kettle Moraine 100 Endurance RunsThis year our 100 km race is a part of the Montrail Ultra Cup series. By participating in the 100 km race you are automatically entered in the Montrail Ultra Cup pointís race. In order to remain involved you must register for the series at http://run.montrail.com. There are many ways to win in the 2004 Montrail Ultra Cup. Please visit the Montrail UltraCup website for more information.

100 Mile100 K

WisconsinLa Grange

Key West Half Marathon7 a.m. Certified. Waterfront course loops the island, including sections along the beaches and through Old Town Key West.

Half Marathon

FloridaKey West

Kiawah Island Marathon All courses will run through scenic Kiawah Island. Enjoy maritime forest, marsh views and grand homes as you run through the island community. Course is flat and tree lined, offering wind protection. ...(continued)

Kings Mountain Marathon and Half MarathonIn 1780, atop Kings Mountain the Patriot Militia toppled the Royal Loyalists in the Revolutionary War. When the smoke cleared on the mountainís steep western ridge, the Patriot Militia stood victoriou ...(continued)

MarathonHalf Marathon

South CarolinaBlacksburg

Kiwanis Lake CityThis is a small town marathon with the host hotel just 5 minutes from the start. You will probably not find large crowds here, but should have an easy time locating our start and finish area and hopef ...(continued)

Knickerbocker Canyon Trail RunHalf marathoners will run on the historic Western States trail, out to no-hands bridge and will then tackle one of the toughest climbs in the area, and training grounds for top runners, the dreaded K2 ...(continued)

30 KHalf Marathon10 K

CaliforniaCool

Knoxville MarathonCome experience southern hospitality at its finest. With our pre-race EXPO in the Knoxville Convention and Exhibition Center, our finish line inside Neyland Stadium, and our post-race activities inside the concourse of the Stadium, this promises to be a truly spectacular event.

Krolls Diner Bismarck MarathonThe Kroll's Diner Bismarck Marathon attracts runners from all over the United States and Canada. The course is USATF certified and so serves as a qualifying race for the Boston Marathon and New York C ...(continued)